README.md

Consumer SerializationException infinite loop

Kafka 0.10.x consumer code to reproduce infinite loop when a topic contains a malformed key or value but the Deserializer throws a SerializationException.

Requirements

To run the examples you will need:

• JDK 1.8+

Configure the topic and publish records

Create the topic:

bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic test --partitions 1 --replication-factor 1

Then publish a few records (int32 values) including one malformed integer value:

printf "\x00\x00\x00\x00\n" | bin/kafka-console-producer.sh --broker-list localhost:9092 --topic test
printf "\x00\x00\x00\x01\n" | bin/kafka-console-producer.sh --broker-list localhost:9092 --topic test
printf "\x00\x00\x00\n"     | bin/kafka-console-producer.sh --broker-list localhost:9092 --topic test
printf "\x00\x00\x00\x02\n" | bin/kafka-console-producer.sh --broker-list localhost:9092 --topic test

Run the consumer with Kafka clients 0.10.1.1

Use the Gradle wrapper (no need to install Gradle) to build and run the application:

./gradlew run

Run the consumer with Kafka clients 0.10.0.1

Use the Gradle wrapper (no need to install Gradle) to build and run the application:

./gradlew run -DkafkaVersion=0.10.0.1

Run the consumer with Kafka clients 0.9.0.1

Use the Gradle wrapper (no need to install Gradle) to build and run the application:

./gradlew run -DkafkaVersion=0.9.0.1